Adequate fruit and vegetable is thought to have a protective effect against colorectal cancer and colorectal adenomas.
However, several recent studies have found no association.
In this study, doctors from the United States examined the association between fruit and vegetables and adenomatous polyp recurrence in the Polyp Prevention Trial.
The Polyp Prevention Trial had previously found no association between a low-fat, high-fiber, high-fruit and vegetable diet, and adenoma recurrence.
The team performed a further analysis of the entire Polyp Prevention Trial cohort.
The team found that there was no significant association between non-advanced adenoma recurrence and overall change in fruit and vegetable consumption.
However, they determined that patients who had the greatest increase in dry bean intake, compared with those who had the lowest increase, had a significantly reduced OR for advanced adenoma recurrence (OR = 0.35).
Dr Elaine Lanza's team concluded, "The Polyp Prevention Trial trial-based cohort provides evidence that dry beans may be inversely associated with advanced adenoma recurrence".